2 to 4 houses, aligned on the figures that decide between them and computed at one shared rate so the columns can be subtracted. Price per square foot, asking against comparable solds, the whole monthly carrying cost, the first year including what it costs to close, and the lines one of these houses carries that another does not. This page states the differences rather than leaving them to be worked out in your head, and it does not pick one, because which house is better is not something the data knows.